--- title: "Talesun TALESUN-TH3G66M-635 635W Solar Panel - Specs & Review | ComparePV" description: "Talesun TALESUN-TH3G66M-635 635W solar panel. Specs: 23.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/talesun-talesun-th3g66m-635" updated: 2026-09-11 --- # Talesun TALESUN-TH3G66M-635 Light for its output, no clear weak spot 76 panels in the segment HJT 600-650 W ## Identity - **Manufacturer:** Talesun - **Model:** TALESUN-TH3G66M-635 - **Series:** HYPRO TH3G66M - **Rated power:** 635 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 600-650 W (76 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 635 W | 625 W | Strong - top 24% | | | Module efficiency | 23.50% | 22.60% | Strong - top 9% | 716 | | Power density | 235.1 | 225.8 | Strong - top 7% | 741 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 32.6 kg | 33.6 kg | Strong - top 5% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.50% | 22.60% | Strong - top 9% | 716 | | Power density | 235.1 | 225.8 | Strong - top 7% | 741 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 51.3 | 54.7 | Strong - top 5% | 4,708 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **51.3 kg per kWp** - Top 5% of the HJT 600-650 W segment, against a median of 54.7. Ranked 4,708th in the whole database. - **235.1 watts per square metre** - Top 7% of the HJT 600-650 W segment, against a median of 225.8. Ranked 741st in the whole database. - **23.50% module efficiency** - Top 9% of the HJT 600-650 W segment, against a median of 22.60%. Ranked 716th in the whole database. - **Best for:** Weight-limited structures, roofs where every square metre counts and small roofs that need every watt. ## Specification ### Electrical - **Rated power (Pmax):** 635 W - **Efficiency:** 23.50 % - **Voltage at Pmax (Vmp):** 41.32 V - **Current at Pmax (Imp):** 15.39 A - **Open-circuit voltage (Voc):** 49.43 V - **Short-circuit current (Isc):** 16.26 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.6 kg - **Area:** 2.70 m2 - **Power density:** 235.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 716 of 14005 | | Power density | 741 of 14005 | | Temperature coefficient | 13 of 14005 | | Weight | 4708 of 14005 | | Warranty | 21 of 14005 | ## About this series The Talesun HYPRO TH3G66M photovoltaic panel series is a response to the growing demand from investors to maximize yields from limited mounting space. Thanks to the use of advanced **Half-Cut cell technology** based on large silicon wafers, these modules are characterized by significantly lower energy losses and higher resistance to the negative effects of partial shading. A key differentiator of this series is the **use of Multi-Busbar (MBB) technology**, which not only improves current flow but also minimizes the risk of micro-cracks, directly translating into the longevity of the installation. Designers focused on eliminating the phenomenon of light-induced degradation through **precise gallium doping of silicon**, which guarantees stable operation and maintains high efficiency over many years of use. These models are an ideal solution for large commercial projects and solar farms where a low LCOE is key. By choosing the HYPRO TH3G66M series, you gain investment certainty based on **high power density**, which outperforms standard market solutions in terms of efficiency in difficult weather conditions. This is a solid foundation for systems requiring uncompromising reliability and a fast return on investment. ## Notable figures - At 23.5% efficiency, this panel is 0.9pp above typical \*\*HJT 600-650W\*\* modules (median: 22.6%) - Power density of 235.1 W/m² packs 9.3 W/m² more into the same footprint vs \*\*HJT 600-650W\*\* median (225.8 W/m²) - At -0.24%/°C, hot weather performance is typical for \*\*HJT 600-650W\*\* panels - Weight of 32.6 kg is typical for \*\*HJT 600-650W\*\* panels - Bifaciality factor of 90% can add 4-14% extra yield with reflective mounting surface ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/600-635-HYPRO_TH3G66M_0BB_Silver_20250311_EN-909fdb28ea24.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Hotter, lighter, +1.7 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +45 W, lighter, +1.7 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +40 W, lighter, +1.5 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Hotter, lighter, +1.5 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +35 W, lighter, +1.3 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +35 W, lighter, +1.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Hotter, lighter, +1.3 pp | | [Talesun TM3G66M-600](https://comparepv.com/panel/talesun-tm3g66m-600) | 600 W | -35 W, hotter, -1.3 pp | | [Talesun TM3G66M-605](https://comparepv.com/panel/talesun-tm3g66m-605) | 605 W | -30 W, hotter, -1.1 pp | | [Talesun TM9G72M-610W](https://comparepv.com/panel/talesun-tm9g72m-610w) | 610 W | -25 W, hotter, -0.9 pp | | [Talesun TM9G72M-615W](https://comparepv.com/panel/talesun-tm9g72m-615w) | 615 W | -20 W, hotter, -0.7 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +65 W, hotter, +1.5 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +60 W, hotter, +1.4 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +35 W, hotter, +1.3 pp | --- Source: https://comparepv.com/panel/talesun-talesun-th3g66m-635 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.